Modeling competition between Laurencia obtusa (Ceramiales,Rhodophyta) and Hypnea spinella (Gigartinales,Rhodophyta) at Cabo Frio Island,Rio de Janeiro,Brazil |
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| Authors: | Guimaraens Mariana A. Coimbra Carlos Alberto Coutinho Ricardo |
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| Affiliation: | (1) Division of Marine Biology and Fisheries, Rosenstiel School of Marine and Atmospheric Science, 4600 Rickenbacker Causeway, 33149 Miami, FL, USA;(2) Laboratório Nacional de Computação Científica, Rua Lauro Müller 445, 22290-160 Rio de Janeiro, RJ, Brazil;(3) Instituto de Estudos do Mar Almirante Paulo Moreira, Rua Kioto 253, 28930-000 Arraial do Cabo, RJ, Brazil |
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| Abstract: | The Lotka-Volterra competition model was used to represent the interaction between Laurencia obtusa and Hypnea spinella. A new model that considers effects of competition on algal carrying capacity is suggested. To test the models, data from field experiments conducted in an intertidal region at Cabo Frio Island, Rio de Janeiro, Brazil, were used. Both models showed that Hypnea was a stronger competitor than Laurencia. The model of interaction through the carrying capacity showed a stable coexistence between the algal populations and better represented the experimental data. |
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| Keywords: | competition seaweed theoretical models |
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